Linux制作之Ext4 ReiserFS Btrfs 等7种文件体系功能比拼仓酷云
要多动手，不要怕什么搞坏了怎么办，你不搞坏，不去动手，就永远不会有收获，既然你在linux中是自由的，那就发挥自己的权利；自上一篇《Ext2v.s.Ext3v.s.Ext4功能比拼》公布以来，社会各界纷繁来电来函，给出了“Ext4我看行”，“Ext4牛牛牛”，“用了Ext4，嘿，还真对得起这块盘”，“Ext4，碎片往无踪，功能更出众”等等热忱弥漫的批评，兄弟我深受鼓动。在对Ext4颇不低俗的功能举行表彰的同时，国民大众还提出了新的请求，但愿看到与现有同类文件体系功能横向比拼的了局。为了满意宽大大众的热切需求，明天做了Ext2、Ext3、Ext4、XFS、JFS、ReiserFS和Btrfs的周全功能测试，对照了局以下：
完全表，请看：filesystem.html
reclenwriterewritereadrereadrandomreadrandomwritebkwdreadrecordrewritestridereadfwritefrewritefreadfrereadExt2
real27m23.545s
user0m9.184s
sys4m40.925s4218,554218,662668,245245,20885,235175,284101,8641,911,57974,368215,014217,680583,169244,8318216,064220,489618,661243,444146,695215,002176,9082,314,305129,333215,772218,571605,436241,14416218,874219,173609,563242,592246,442220,306292,1142,438,520218,357216,497219,774596,211244,65232219,584217,859611,712244,445372,023224,151442,6292,423,574334,999218,829219,553606,186244,34664216,320219,400622,218243,761478,747227,018580,9602,633,117439,129215,956220,166608,210243,950128219,286218,318614,559243,862579,724224,346690,9452,467,787537,440219,420218,330607,326244,337256216,027220,509635,633245,385614,120227,099842,2202,567,169614,753217,744219,897617,728243,780Ext3
real27m26.675s
user0m9.323s
sys6m43.199s4215,478218,294604,858246,14886,758151,858102,1131,618,76974,979214,446218,569568,659242,7728217,695218,777609,377244,520148,608190,313171,9031,830,365128,957218,752217,501603,465246,86116215,683219,822643,396248,815252,255202,374290,6811,915,488219,805216,519219,033568,086243,98532219,341217,364603,462245,273379,512208,740435,7562,069,791335,303218,578219,086604,572245,57864216,192220,186665,646244,234481,101212,185567,7502,106,710442,926217,075220,042618,134244,870128218,503219,151616,479244,711589,927212,355683,9432,080,136541,597219,271218,514600,308244,782256217,255219,213637,417248,555636,309211,793839,9072,125,314618,958218,424218,954600,894245,523Ext4
real26m15.771s
user0m9.609s
sys5m36.096s4225,586224,616532,721270,17482,398180,231102,9351,683,47674,990224,893224,186277,025584,8688226,896221,965274,314629,603239,913219,223156,9642,026,184127,553226,382227,019292,566593,15416222,929229,392272,022599,360390,533223,951256,8312,114,002212,773227,728225,332602,317269,28932223,703221,025566,981262,980380,787227,198435,7742,157,610338,629226,208225,816591,102268,72564222,236223,813593,481268,002522,365227,268582,8302,216,225457,252228,294223,269614,376269,657128221,681222,859285,304623,990915,430231,380663,3832,276,039573,624226,616224,477583,965271,159256220,129221,608279,101657,815889,963232,256770,2202,212,083610,074225,877224,642288,852603,933XFS
real28m43.957s
user0m9.899s
sys6m4.268s4217,459214,348244,600239,64778,424161,673107,6431,711,97674,828218,638216,903227,675240,4928220,514219,994241,854951,125248,623207,750161,1752,214,681127,363218,892211,613219,749240,28616220,776220,740226,186242,746224,486219,963318,5032,480,826223,664221,106221,694669,693262,34632218,481216,919255,232799,715593,083225,213408,8162,278,034337,026222,153213,330226,093241,35164216,921210,031228,877244,161430,479225,432612,8722,568,460448,155224,650209,745221,768239,888128216,341218,284232,550242,283559,400227,915768,2512,545,859568,945222,605216,060714,911258,397256221,444220,462469,309321,275757,895225,641806,2512,689,152609,077219,703219,815226,021240,108JFS
real26m53.990s
user0m9.096s
sys4m39.691s4196,819218,121455,194258,06285,910169,163142,8141,949,28292,246212,270217,272450,996258,9288211,794215,030445,452258,082147,556208,623236,1972,214,516159,402213,076218,146451,013258,76716209,028214,714455,795257,989248,145218,747399,9352,587,176269,527214,271215,626439,736258,83032210,454218,204448,067258,568380,325220,682591,7812,379,845409,061213,292217,683439,114259,16064214,862215,636450,430258,413487,982222,660750,1392,613,574522,050216,365217,830444,546259,553128213,152218,084449,185258,775592,912148,064933,5832,728,229667,878219,155213,461466,396262,608256213,119213,514477,804258,508631,376129,0601,055,2052,727,762717,814213,771217,569463,931258,291ReiserFS
real28m16.075s
user0m10.134s
sys7m38.726s4208,422217,932190,459223,68472,142175,21099,8201,726,65474,081211,433216,255540,847239,0918214,840218,917610,592240,376146,908210,703176,2952,180,046128,114215,368218,950580,334240,26116216,886217,827651,240243,800249,478219,967288,4572,444,958213,780217,438219,510592,932239,51032214,217219,178645,366240,227369,030224,795434,5562,372,823329,006217,055217,110554,072240,04664217,160219,013623,512239,875470,435224,619560,7902,429,552421,615218,043218,734587,074239,802128215,163219,348624,117240,364572,926226,463683,6862,530,721530,024215,932218,157577,617240,975256217,058218,839643,857240,141615,875224,530825,3642,631,201590,909217,256218,942567,422240,061Btrfs
real59m41.974s
user0m10.382s
sys18m40.804s4214,203215,879265,389280,24465,36710,52016,032773,64434,26094,105194,357269,380268,2548218,318215,978270,100275,160109,68726,01540,4471,366,91189,489141,760214,990273,446271,53116219,477215,738284,876282,111178,66247,88172,6231,864,106150,255177,508219,348264,935273,14032218,835220,886281,550277,054246,933130,288181,7742,573,279250,936204,491219,736281,894268,98964216,758218,890282,026275,127312,803195,963299,6853,270,521354,200202,362220,928281,331271,676128216,509220,235279,353274,813368,053215,445343,6963,739,759414,950216,029219,711276,973272,569256220,333216,113277,920273,271405,215215,495393,7314,015,851474,052213,849220,372283,035277,594
Kbytes/sec本次测试所利用的Linuxkernel版本为2.6.29-rc3，文件体系功能测试工具为IOzone3.318。
从测试了局能够看出，Ext4的综合功能位居现有文件体系之首，JFS、ReiserFS在读功能方面亦有不俗体现。Btrfs的小块数据读写功能与均匀程度相差甚远，是招致其本次测试总工夫超越均匀工夫两倍的次要缘故原由。较之别的成熟的文件体系，Btrfs投进临盆体系运作大概尚需光阴。
至于一小撮不明原形心怀叵测的大众提出还要测NTFS、Vfat、MSDOS等“文件体系”，恕工夫无限，不予受理。
本文出自：http://hutuworm.blogspot.com/2009/02/ext4-reiserfs-btrfs.html
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